The temperature on April 12, 1911 was between 0.9 °C and 6.7 °C and averaged 4.5 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 15 » More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
December 29 » Sun Yat-sen becomes the provisional President of the Republic of China; he formally takes office on January 1, 1912.
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